The version of Rabbit Transit you have is a prototype. RT was originally released by Starpath (Arcadia) for the Supercharger add on and was on a tape. Atari was planning on releasing a version of the game themselves on cartridge, but never did. There's at least one other copy out there. You can read more about it on my webpage: http://www.atariprotos.com/2600/software/rabbittransit/rabbittransit.htm
What are the other games you got in that box? You may have more than one prototype.
Tempest
There were versions of Pigs in Space, Krull, Tempest, Phoenix, Vanguard, Pole Position, Moon Patrol, Mega mania, and one called snoopy and red baron. All were in loaner cases.. There were other games but they were not in loaner cases.
Bob